813668830 has 32 divisors (see below), whose sum is σ = 1578528000. Its totient is φ = 300191232.

The previous prime is 813668803. The next prime is 813668851. The reversal of 813668830 is 38866318.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310566 + ... + 313174.

It is an arithmetic number, because the mean of its divisors is an integer number (49329000).

Almost surely, 2^813668830 is an apocalyptic number.

813668830 is a deficient number, since it is larger than the sum of its proper divisors (764859170).

813668830 is a wasteful number, since it uses less digits than its factorization.

813668830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5028.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 813668830 is about 28524.8808937040. The cubic root of 813668830 is about 933.5750282502.

The spelling of 813668830 in words is "eight hundred thirteen million, six hundred sixty-eight thousand, eight hundred thirty".